Radial driving-wheel for locomotives



K. RUSHTON.'l IIA-DIAL DRIVING WHEEL FOR' ILoCoIvIoTIvEs.

APPLICATION FILED SEPTIv I0. 1919.

Patented Oot. 12, 1920.

3 SHEETS-SHEET l.

K. RUSHTON.

RADIAL DRIVING WHEEL FOR LCOMOTIVES.

APPLICATION FILED SEPT. I0. I9I9.

Pafuenued 0015. 12, 1920.

3 SHEETS-SHEET 2.

K. RUSHTON. RADIAL DRIVING WHEEL FOR LOCOMOTIVI'S.y

APPLICATION FILED SEPT. l0. 1919. 1,355,699.

0. Y w L f] UNITED STATESv PATENT OFFICE.-

KENNETH RUSI-ITON, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 THE BALDWIN LOCOMOTIVE WORKS, `0F PLI-IILADEL-II-IIA,` PENNSYLVANIA, A

CORPORATION 0F PENNSYLVANIA.

- RADIAL DRIVING-WHEEL FOR LOCOMOTIVES.'

l Specification of Letters Patent. v Patented Oct. 12,1920.

Application led September 10, 1919. Serial No. 322,818.

To all whom t may concern.'

Be it known that I, KENNETH RisH'roN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Radial Driving- Y Wheels for Locomotives, of which the following is a specication. y p l My invention relates to certain improvements in locomotives, particularly those of the narrow gage type, in which there is a series of driving wheels at each side. y

One object of the invention is to design the locomotive so that a pivoted driving axle may be located at one or both ends thereof.

A further object of the invention is to provide a bearing mounted on ka fixed axle from which the end wheels adapt themselves .Y

on a radius.

Y (A still further object of the .invention is Another object of theinvention is'to' pro-Vl vide the axle with a rectangular section tov which are adapted blocks mounted-in the wheel Astructure andto provide springs for .allowing a certain amount oflateral movej ment.

In the accompanying drawings:

Figure 1 is a plan view, sh'owingthe y frame and the four axles of a narrow gage wheels are at the. opposite end.

type of locomotive;

Fig. 2 is a longitudinal sectional view on the line 2-2, Fig. 1;

Fig. 3 is a transverse sectional view,

drawn to an enlarged scale, of one of the lend axles of the wheel structure;

Fig. 4 is a transverse sectional view on the line 4-4, Fig..3; i 1

Fig. 5 is a perspective view of one of the curved coupling blocks, .and

Fig. V6 is a view illustrating a locomotive in whichthe pivoted :driving wheels areA at one end and the ordinary pivoted truck Referring to the drawings, 1, arethe side frames of the locomotive of the ordinary type having pedestals to receive the boxes 2 `inwhich the axles 3, 3 and 4, 4

are mounted.v In the present instance, ,the locomotive is illustrated as provided with four axles and four driving wheels at each side. yAll of the axles are adaptedto boxes,

and the wheels 5 are secured to the axles 3. The wheelstructures 6 are mounted on the axles 4 and while they must turn with the axle they are free to swing to` accommodate curves.

On each axle is a crank disk 7 having a pin V8. These4 pins are connected by the usual rods 9 and one of the pins of the cen-y tral axles vis elongated to receive the main connecting rod 10. 11 is a central ybearing framemounted on the two axles 3, 3, which are shouldered, as at 12, to retain the bearing in the central position. The bearing is provided with boxesv 13 adapted to each axle 3, and the two bearings are connected together by a tube 14, in the present instance, althoughl this construction may be varied. The central frame 11 carries at its end a pivot pin 15 to which the radius frame 16 is pivoted .This frame consists. of a V- shaped member 17 and two cylindrical bearings 18, which are securely boltedfto the memberl 17. These bearings v`encircle the portions 19 of the wheel structure 6 and al- Vlow the said structure to` swing sothat the wheels 20, to which these portions are rigidly attached, will accommodate themselves to the curves of the rails.

r In order to drive the wheel structure from the shaft, which is adapted to` fixed boxes, I `make the center' 21 of the shaft square, as

shown in` Figs. 3 and 4, and form. a rbox 22 on the wheel structure having four recesses to which are adapted the curved coupling blocks 23. The interior of the box 22 is curved and each blockA is curved to` correspond with it. The blocks,` as shown in Fig. 5, have vertical sides, which fit the' side walls of the recess in the coupling so" thatwhen motionfis imparted `to theshaft 21 the strain is taken by walls of considerable area. y 4

In order to assemble the parts, I make the wheel structure in two sections, each secvtion having a flange 24, secured together by bolts 25. While I havey shown `the Wheel Vcenter .26 forming anintegral v,part of the portion 19 of the wheel structures, they may be separate and bolted thereto, Vif found desirable. jIn theV present instance, there is a cap plate 2f? secured to the ortions 19, and

between this cap4 plate and t e follower ring y 30 at each end of the wheel structure is a ture. to thecentral position.

' t 'Y for ,the wheel structures are carried on acen-v heavy coiled spring 31. One wall of this follower ring is curved, as' shown, the curve being taken from the center of the shaft, y

and bearing against this ring is a second curved ring 32, which fits snugly on the portion 33 of the shaft 4. There is one of these rings on each side of the center, asl shown clearly `in Fig'. 3L The opening in ther ring 30 is much larger than the shaft. so that the shaft can have considerable movement without interfering with the ring 30 and the saine is the case with the cap plate27, the opening'in whichy is much larger thanthe shaft'.- The ring 32 isless in diameter' than the opening `in the wheel structure and located between this ring and yaA shoulder 4 on ,thestructure is a ring V35. Whileone wall vof this ring is also curved to correspond with the curve of the ring 32,'the otherwall fits snugly against the shoulder. When the locomotive is passing around a curve, thereis a tendency for the shaft to move longitudinally. In order to allow for this movement, I locatethe springs 31 on each side of the coupling so thatwhen this-v longitudinal movement takes place one of the springs yields to allow this movement,

Vwhilefthe vwheels are retarded by the rails, Y

but assoon as the locomotive passes to the straight track the springs return the struc- There is a small amount of lost motion to allow the wheels to accommodate themselves to the .tra ':k.' t 1 I preferably insert a bearing stripbetween thetwo rings 30A and 32, as shown'.V I provide an openingj36,l closed by a screw plug 37,1204 permit lubricant to be placed within the structure. A v

. .In Fig-. 6, I haveillustrated a frame of'a locomotive, in which there are three driving axlesV 3a, 3? and 49. The axles ahave the wheels rigidly secured thereto, while the wheelI structureis pivotally mounted oni the axle The wheels' 38v (Shown in diagram) are carried by the ordinary truck, or pilot, andar`e not driven. In this figure, the clfirifedV tracks v39 are also shown, the driving wheels'- on the, axle selveslto/ t'he track v. i Y

It will be seer'iby' vthe above construction tirati amesableidftqBuildfa 'Iecniociye with vt'ree or Inor'e driving axles, andto mount a Y wheel structure on a drivingaxle4 at Vone end, or on a driving axle at both ends of the 'structure means by which the wheel structure canhswing independently of 'its'.

axle in passing around curves and the pivots wheels ofthe ordinary construction.

While my invention' is especially adapted fblse in connection with lalplw gage loco- 4" accommodating them# Y Y within which they aref mounted, and wheels rigidly secured to the wheelstructures motives, it will be understood that it can be used with other types vof locomotives as well.

nection with locomotives in which the frames are outside of the vdriving wheels.V

I claim: f

It is especiallyjadapted for use in Ycon- .Y

770 1.1'I`he combination in a locomotiva-'of aY series oftaxles; boxes for the axles;fframes Y in .which the' boxes a're mounted; Ya central axle having driving wheels fixed thereon; an

' end drivingaxle extending from one side of the locomotive to the'other and having a wheel structure swiveled thereon, the'axle having aseries of lflat surfaces at its center,

tened Vsurface bearing' uponthe fiat surfaces o fthe axle, and having their abutting the side .walls of the recesses, and means for drivin theseveral axles, motion being imf parte to the wheel structure from its axle 2. he combination iii a locomotive, of a' wheel structure pivotally mounted on'one f end axle; a bearing supported byV each of the intermediate axles to whichthel wheel strucV` tureis directly pivote'd; and a coupling con# necting the end axle with its wheel structure so that the wheel structure must turn on its Y axle, but is free to swivel thereon a The Combination in, ai, iocoauvaiof side;frames; a series of drivingaxlesreach axle extending from one side f'ijaheto'v the other and adapted tobea'rings in the' frames; 1

meansfor driving the' axles', wheels located on' the intermediate axles between Vthe y frames, a wheel structure on each end axle Y also located between the frames; the said wheel structure havir'g a series of recesses therein, each end*V axle having'flat surfaces at the center, blocks mounted iii'Y the recesses in' the wheel structure? having flattened sur' faces bearing upon the surfaces of their respective axles and having their' remaining surfaces abutting the walls of the recesses fl. The. combinationin' a` locomotive, 'of a frame; driving axlesYmoii'iited in* bearings in the frame means" ,for driivinglthe axles in messed ivhls th intermedia@ axlesI a Ywheel structure swivele'd o'n an end center; a spring betwei'i ea'ch'capi plate-4 and VVeach'followerv "onel'wall ofeach'folg, lower ringv being concaved and a ring free and having one face concaved to fit the concaved surface of the follower ring and having the other face concaved; a ring on each side of the center bearing against a shoulder on the wheel structure and having a convex curved surface to it the concaved surface of the ring on the axle.

5. The combination in a locomotive, of a frame; driving axles mounted in the Jframe; means for driving the axles in unison; wheels fixed to the intermediate axles, a wheel structure on an end axle, the said end axle having flat surfaces at the center the wheel structure being recessed opposite'the flat surfaces and blocks located in the recesses and bearing upon the flat surfaces and free to slide longitudinally thereon, a spring at each side of the center, the outer end of each spring bearing against the wheel structure, a follower ring at each side of the center against which the other end of each spring finds its bearing; a ring at each side of the center and sliding on a reduced portion of the axle and taking the thrust of the springs and arranged to allow the wheel structure to have a lateral movement inde- 'pendent of the axle.

KENNETH RUSHTON. 

